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NRC proposes changes to its rules on nuclear materials
In response to Executive Order 14300, “Ordering the Reform of the Nuclear Regulatory Commission,” the NRC is proposing sweeping changes to its rules governing the use of nuclear materials that are widely used in industry, medicine, and research. The changes would amend NRC regulations for the licensing of nuclear byproduct material, some source material, and some special nuclear material.
As published in the May 18 Federal Register, the NRC is seeking public comment on this proposed rule and draft interim guidance until July 2.
Harold T. Maguire, Jr., Carlos R. S. Stopa, Robert C. Block, Donald R. Harris, Rudolf E. Slovacek, John W. T. Dabbs, Rodney J. Dougan, Richard W. Hoff, Ronald W. Lougheed
Nuclear Science and Engineering | Volume 89 | Number 4 | April 1985 | Pages 293-304
Technical Paper | doi.org/10.13182/NSE85-A18621
Articles are hosted by Taylor and Francis Online.
The fission cross sections of 244Cm, 246Cm, and 248Cm have been measured from 0.1 eV to 80 keV using the Rensselaer Intense Neutron Spectrometer. The cross sections were normalized to the 235U ENDF/B-V broad-bin-averaged fission cross section. Fission areas and widths were determined for the resolved low-energy resonances. In general, the ENDF/B-V fission cross sections for the curium isotopes are in poor agreement with the measured cross sections and a new evaluation of these curium cross sections is recommended. The observation of structure in the measured cross sections in the unresolved region is suggestive of intermediate structure in the even curium isotopes.
